Securities Portfolio (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) Security	Dec. 31, 2017 USD ($) Security
Debt Securities, Available-for-sale [Abstract]
Amortized cost	$ 150,976
Fair value	148,247
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized cost	150,976	$ 158,192
Gross unrealized gains	298	808
Gross unrealized losses	(3,027)	(1,879)
Fair value	$ 148,247	157,121
Number of securities exceeding ten percent of stockholders' equity | Security	0
Available-for-Sale, Amortized Cost [Abstract]
Due in one year or less	$ 11,285
Due after one year through five years	27,800
Due after five years through ten years	31,214
Due after ten years	78,780
Total debt securities	149,079
Other securities without stated maturities	1,897
Total securities	150,976
Available-for-Sale, Fair Value [Abstract]
Due in one year or less	11,281
Due after one year through five years	27,427
Due after five years through ten years	30,628
Due after ten years	77,014
Total debt securities	146,350
Other securities without stated maturities	1,897
Total securities	148,247
Information about securities sold [Abstract]
Proceeds from sales	12,536	4,480
Gross realized gains	131	96
Gross realized losses	11	0
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	59	112
More Than Twelve Months	2,968	1,767
Total	3,027	1,879
Securities Available-for-Sale, Fair Value [Abstract]
Less Than Twelve Months	14,427	25,170
More Than Twelve Months	91,252	79,434
Total	$ 105,679	$ 104,604
Securities Available-for-Sale, Number of Securities [Abstract]
Number of Securities | Security	88	77
Collateral Pledged [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Securities pledged as collateral	$ 59,900	$ 66,600
U.S. Treasury Securities [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized cost	12,323
Gross unrealized gains	6
Gross unrealized loss	(1)
Fair value	12,328
Available-for-Sale, Amortized Cost [Abstract]
Total securities	12,323
Available-for-Sale, Fair Value [Abstract]
Total securities	12,328
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	1
More Than Twelve Months	0
Total	1
Securities Available-for-Sale, Fair Value [Abstract]
Less Than Twelve Months	2,484
More Than Twelve Months	0
Total	$ 2,484
Securities Available-for-Sale, Number of Securities [Abstract]
Number of Securities | Security	1
Obligations of US Government Agencies [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized cost	$ 10,868	9,530
Gross unrealized gains	2	27
Gross unrealized loss	(156)	(122)
Fair value	10,714	9,435
Available-for-Sale, Amortized Cost [Abstract]
Total securities	10,868	9,530
Available-for-Sale, Fair Value [Abstract]
Total securities	10,714	9,435
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	47	11
More Than Twelve Months	109	111
Total	156	122
Securities Available-for-Sale, Fair Value [Abstract]
Less Than Twelve Months	6,014	3,189
More Than Twelve Months	3,206	3,089
Total	$ 9,220	$ 6,278
Securities Available-for-Sale, Number of Securities [Abstract]
Number of Securities | Security	15	13
Obligations of States and Political Subdivisions [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized cost	$ 49,194	$ 64,413
Gross unrealized gains	155	489
Gross unrealized loss	(512)	(137)
Fair value	48,837	64,765
Available-for-Sale, Amortized Cost [Abstract]
Total securities	49,194	64,413
Available-for-Sale, Fair Value [Abstract]
Total securities	48,837	64,765
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	10	32
More Than Twelve Months	502	105
Total	512	137
Securities Available-for-Sale, Fair Value [Abstract]
Less Than Twelve Months	5,829	11,141
More Than Twelve Months	23,727	10,999
Total	$ 29,556	$ 22,140
Securities Available-for-Sale, Number of Securities [Abstract]
Number of Securities | Security	45	29
Mortgage-Backed Securities [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized cost	$ 73,444	$ 75,906
Gross unrealized gains	93	0
Gross unrealized loss	(2,346)	(1,610)
Fair value	71,191	74,296
Available-for-Sale, Amortized Cost [Abstract]
Total securities	73,444	75,906
Available-for-Sale, Fair Value [Abstract]
Total securities	71,191	74,296
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	0	67
More Than Twelve Months	2,346	1,543
Total	2,346	1,610
Securities Available-for-Sale, Fair Value [Abstract]
Less Than Twelve Months	0	9,742
More Than Twelve Months	63,930	64,554
Total	$ 63,930	$ 74,296
Securities Available-for-Sale, Number of Securities [Abstract]
Number of Securities | Security	24	24
Money Market Investments [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized cost	$ 1,897	$ 1,194
Gross unrealized gains	0	0
Gross unrealized loss	0	0
Fair value	1,897	1,194
Available-for-Sale, Amortized Cost [Abstract]
Total securities	1,897	1,194
Available-for-Sale, Fair Value [Abstract]
Total securities	1,897	1,194
Corporate Bonds and Other Securities [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized cost	3,250	7,049
Gross unrealized gains	42	195
Gross unrealized loss	(12)	(10)
Fair value	3,280	7,234
Available-for-Sale, Amortized Cost [Abstract]
Total securities	3,250	7,049
Available-for-Sale, Fair Value [Abstract]
Total securities	3,280	7,234
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	1	2
More Than Twelve Months	11	8
Total	12	10
Securities Available-for-Sale, Fair Value [Abstract]
Less Than Twelve Months	100	1,098
More Than Twelve Months	389	792
Total	$ 489	$ 1,890
Securities Available-for-Sale, Number of Securities [Abstract]
Number of Securities | Security	3	11
Other Marketable Equity Securities [Member]
Equity Securities, Available-for-sale [Abstract]
Amortized cost		$ 100
Gross unrealized gains		97
Gross unrealized loss		0
Fair value		197
Municipal Obligations, Mortgage-Backed Securities, and Other Securities [Member]
Debt Securities, Available-for-sale [Abstract]
Gross unrealized loss	$ (3,000)	(1,800)
Fair value	91,300	79,400
Available-for-Sale, Fair Value [Abstract]
Total securities	$ 91,300	$ 79,400
Securities Available-for-Sale, Number of Securities [Abstract]
Number of Securities | Security	65	40